Monday, April 23, 2018
GP320 Caliper – Part No: 120-8525
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GP320 Caliper Product Number: 120-8525     Price: $161.99
Available Caliper #120-8525 Configurations

Black Caliper

Right Hand

Black Caliper

Left Hand

Caliper No: 120-8525
Wilwood GP320 Caliper Caliper

Wilwood GP320 Caliper Caliper
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GP320 Caliper
The GP 320 billet four piston caliper is a compact, high efficiency performer. Weighing just 1.70 pounds, it was purpose built as an upgrade with increased pad size over two piston calipers on lightweight open wheeled racecars. The GP 320 is also well suited to other performance and racing applications including, but not limited to karts, motorcycles, mini-sprints, and formula sports racers. The GP 320 bridge configuration will accommodate rotors between .18" and .24" thick, with overall diameters between 9.00" and 11.50".  

Caliper is full CNC detail machined from premium alloy billet. FEA structural analysis technology was employed to develop a design that minimizes weight and maximizes rigidity against deflection. Full width bridges are reinforced with four, high strength steel cross bridge bolts. The cross bridge bolts are coated for corrosion resistance and provide added resistance to deflection and body separation under high loads. Internal fluid ports with a single outboard bleeder provide quick and effective evacuation of gasses and spent fluid.    Continue >>

120-8525 - Product Summary
Count: Area (in²): Type: Dust Boot:
4 2.46 Stainless No
Rotor Dimensions
Rotor Width(In): Rotor Diameter(In):
0.24 11.5
Pad Dimensions
Pad Area (in²): Pad Volume (in³):
3.65 1.03
Mount Center(In): Mount Position: Mount Side: Mount Type:
3.5 Left Hand Lug
Duty Rating & Material
Material: Weight(Lbs):
Aluminum 2
Colors & Finishes
Color: Finish:
Black Black Anodize
Product Documents
Full Product Product Data Sheet Installation Instructions
Click To View Click To Download

Vehicle Applications
Driving EnvironmentVehicle Sub-TypesApplication Duty
Motorcycles Heavy Duty
Open Wheel Sprint, Midget, etc… Dirt or PavementLight Duty
Power Sports ATV, SnowmobileMedium Duty

Product Specifications
Rotor Compatibility
Rotor Width(In): 0.24
Maximum Rotor Width(In): 0.24
Minimum Rotor Width(In): 0.18
Maximum Rotor Diameter(In): 11.5
Minimum Rotor Diameter(In): 9
Brake Pad Specifications
Brake Pad Type 1: 6211
Brake Pad Type 2: N-A
Brake Pad Type 3: N-A
Total Pad Area (in²): 3.65
Total Pad Volume (in³): 1.03
Pad Dimensions & Part Numbers
Pad Dimensions for the GP320 Caliper

Pad Dimensions for the GP320 Caliper
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Piston Specifications
Piston 1 Bore(In): 1.25
Piston 2 Bore(In): 1.25
Piston 3 Bore(In):
Total Piston Area (in²): 2.46
Mounting Specifications
Mount Type: Lug
Mount Side: Left Hand
Mount Center(In): 3.5
Mount Hole Size(In): 0.39
Mount Height(In): 1.63
Inlet Thread Size: 1/8-27 NPT
Mount Dimensions & Part Numbers
Dimensions for the GP320 Caliper

Dimensions for the GP320 Caliper
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Parts & Accessories
O-Ring Kit: 130-3602
Replacement Dust Boot: N-A
Replacement Piston 1: 200-8488
Replacement Piston 2: 200-8488
Replacement Piston 3: N-A
Replacement Piston 4: N-A
Cross-Over O-Ring Kit: 130-10540
Bridge Bolt Kit: N-A
Wear Plate L/H: N-A
Wear Plate R/H: N-A
Pad Retainer: 180-3861
Bleed Screw Kit: 220-7496
Self Bleeder Tube: N-A
Cross-Over Tube: N-A